21092820

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{50221}}^1$

素因数の和:50240

約数の個数: 48

約数和(自身を含む): 67498368

約数和(自身を除く): 46405548

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 50221, 100442, 150663, 200884, 251105, 301326, 351547, 502210, 602652, 703094, 753315, 1004420, 1054641, 1406188, 1506630, 1757735, 2109282, 3013260, 3515470, 4218564, 5273205, 7030940, 10546410, 21092820]

約数ペア:

[(1, 21092820), (2, 10546410), (3, 7030940), (4, 5273205), (5, 4218564), (6, 3515470), (7, 3013260), (10, 2109282), (12, 1757735), (14, 1506630), (15, 1406188), (20, 1054641), (21, 1004420), (28, 753315), (30, 703094), (35, 602652), (42, 502210), (60, 351547), (70, 301326), (84, 251105), (105, 200884), (140, 150663), (210, 100442), (420, 50221)]